YASKAWA A1000 Series Quick Start Manual page 104

5 Troubleshooting
Magnetic contactor (MC) on the output side
of the drive has turned on or off.
V/f setting is not operating as expected.
Excessive torque compensation.
Drive fails to operate properly due to noise
interference.
Overexcitation gain is set too high.
Run command applied while motor was
coasting.
The wrong motor code has been entered for
PM Open Loop Vector (Yaskawa motors
only) or the motor data are wrong.
The motor control method and motor do not
match.
The drives rated output current is too small. Use a larger drive.
Digital Operator Display
to oFA03 to oFA06
oFA10, oFA11
,
oFA12 to oFA17
to
oFA30 to oFA43
to
oFb03 to oFb11
to
oFb12 to oFb17
to
oFb30 to oFb43
to
oFC03 to oFC11
to
oFC12 to oFC17
to
oFC30 to oFC43
to
104
Set up the operation sequence so that the MC is not tripped while the drive is outputting current.
• Check the ratios between the voltage and frequency.
• Set parameter E1-04 through E1-10 appropriately (E3-04 through E3-10 for motor 2).
• Lower the voltage if it is too high relative to the frequency.
• Check the amount of torque compensation.
• Reduce the torque compensation gain (C4-01) until there is no speed loss and less current.
• Review the possible solutions provided for handling noise interference.
• Review the section on handling noise interference and check the control circuit lines, main circuit
lines, and ground wiring.
• Check if fault occurs simultaneously to overexcitation function operation.
• Consider motor flux saturation and reduce the value of n3-13 (Overexcitation Deceleration Gain).
• Enable Speed Search at start (b3-01 = 1).
• Program the Speed Search command input through one of the multi-function contact input
terminals (H1-
• Enter the correct motor code to E5-01.
• If a non-Yaskawa PM motor is used, enter "FFFF" to E5-01. Set the correct motor data to the E5-
parameters or perform Auto-Tuning.
• Check which motor control method the drive is set to (A1-02).
• For IM motors, set A1-02 = "0", "1", "2", or "3".
• For PM motors, set A1-02 = "5", "6" or "7".
Option Card Connection Error at Option Port CN5-A
oFA00
Option compatibility error
Option Card Fault at Option Port CN5-A
oFA01
Option not properly connected
Option card error occurred at option port CN5-A
Option Card Fault at Option Port CN5-B
oFb00
Option compatibility error
Option Card Fault at Option Port CN5-B
oFb01
Option not properly connected
Option Card Fault at Option Port CN5-B
oFb02
Same type of option card already connected
Option card error occurred at Option Port CN5-B
Option Card Connection Error at Option Port CN5-C
oFC00
Option compatibility error
Option Card Fault at Option Port CN5-C
oFC01
Option not properly connected
Option Card Fault at Option Port CN5-C
oFC02
Same type of option card already connected
Option card error occurred at option port CN5-C
Heatsink Overheat
oH
The temperature of the heatsink exceeded the overheat pre-alarm level set to L8-02. Default value
for L8-02 is determined by drive capacity (o2-04).
= 61 or 62).
Fault Name
YASKAWA ELECTRIC TOEP C710616 21C YASKAWA AC Drive - A1000 Quick Start Guide